It is said that if someone is more left-brained they are more analytical and verbal, whereas a

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It is said that if someone is more left-brained they are more analytical and verbal, whereas a more right-brained person is more visual and intuitive. Student researchers used an online 30-second brain test that determines whether a person is left-brained or rightbrained, and reports the “percentage left-brained” for a person. The student researchers were curious about whether these percentages change as a person ages. They gave 89 college students this test, recording their ages and their left-brain percentages. The results are shown in the following scatterplot. 


a. Identify the direction (positive or negative) of the association between age in years (age) and percentage left-brained. 

b. Do you think the linear association is weak, moderate, or strong? 

c. Describe anything unusual you notice about the scatterplot.

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Related Book For  book-img-for-question

Introduction To Statistical Investigations

ISBN: 9781119683452

2nd Edition

Authors: Beth L.Chance, George W.Cobb, Allan J.Rossman Nathan Tintle, Todd Swanson Soma Roy

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